It works the same as it did in Word 2003 and earlier. Press Alt+O T (F_ormat
_Tabs) to display the Tabs dialog box. Or, double-click in the bottom half
of horizontal ruler. Or, click the Paragraph launcher (lower right corner of
the Paragraph section in the Home ribbon tab), then click the Tabs button
near the bottom.
Once the Tabs dialog is onscreen... proceed as you did in earlier versions
of Word.
Note: the legacy 2003 keystrokes work for the most part as they did in Word
2003, even though the menus are gone.
